Stokes-Doppler coherence imaging for ITER boundary tomography | Zendy

J. Howard | Zendy; M. Kočan | Zendy; S. Lisgo | Zendy; R. Reichle | Zendy

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Stokes-Doppler coherence imaging for ITER boundary tomography

Author(s) -

J. Howard,

M. Kočan,

S. Lisgo,

R. Reichle

Publication year - 2016

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4963712

Subject(s) - coherence (philosophical gambling strategy) , physics , doppler effect , zeeman effect , stokes parameters , polarization (electrochemistry) , optics , magnetic field , tomographic reconstruction , tomography , optical coherence tomography , computational physics , astronomy , scattering , chemistry , quantum mechanics

An optical coherence imaging system is presently being designed for impurity transport studies and other applications on ITER. The wide variation in magnetic field strength and pitch angle (assumed known) across the field of view generates additional Zeeman-polarization-weighting information that can improve the reliability of tomographic reconstructions. Because background reflected light will be somewhat depolarized analysis of only the polarized fraction may be enough to provide a level of background suppression. We present the principles behind these ideas and some simulations that demonstrate how the approach might work on ITER. The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.

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